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Manual I1AM01 / I1AM0a
MA 1269-A007 EN
20
Stepper motors with 8 leads can be connected with the windings wired in parallel (1) or
series (2).
For 6 lead stepper motors, wiring scheme (3) with series windings is recommended.
If wiring scheme (3) cannot be used because of the motor construction, the motor may be
operated with only two of the four windings energized according to wiring scheme (4).
i
CAUTION – Possible damage!
Destruction of the power stage by connecting a 5 phase stepper motor.
- Do not connect any 5 phase stepper motors to avoid damage.
Motor time constant
τ:
R
L
=
τ
applies to the electrical motor time constant
τ.
The total inductance L
total
is equal to the winding inductance in a parallel circuit,
because of interlinked inductances.
L
total
= 4 x L applies to a series circuit.
The result is an equal motor time constant
τ
for a serial and a parallel circuit:
Circuit series parallel
Resistance R
total
2 x R
2
R
Inductance L
total
4 x L L
Motor time constant
τ
R
L x 2
R x 2
L x 4
series
= = τ
R
L x 2
R/2
L
= τ
parallel
=